pexels-kulbir-11079217
pexels-kulbir-11079217
pexels-kulbir-11079217
The proportion of customers needing an oil change who wait 9 minutes or less.
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The proportion of customers needing an oil change who wait 9 minutes or less.
The owner of an automobile repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following data with waiting times in minutes were collected over a one-month period. repairshop.xlsx Using classes of 0–4, 5–9, and so on, show the following: The frequency distribution The relative frequency distribution The cumulative frequency distribution The cumulative relative frequency distribution The proportion of customers needing an oil change who wait 9 minutes or less.

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